Programmable Controllers

Modicon™ Zelio™ Logic Controller

For applications that require more flexibility than a simple relay, timer or counter, but are too simple for the smallest Nano PLC, Zelio Logic smart relays are available. Designed to accept and control outputs just like a relay, Zelio Logic features logic programming with Function Block Diagram (FBD) or Ladder Logic Programming using either the front panel or by utilizing ZelioSoft software. For more information, refer to Zelio Logic or in catalog DIA3ED2111202EN

Catalog Number Description Inputs Outputs Supply Volts


SR2 with Display 6 Digital 4 Relay 120 Vac


SR2 with Display 8 Digital, 4 Analog 4 Relay 24 Vdc


SR2 with Display 8 Digital 4 Relay 120 Vac


SR2 without Display 6 Digital 4 Relay 120 Vac


SR3 with Display 6 Digital, 4 Analog 4 Relay 24 Vdc


SR3 with Display 6 Digital 4 Relay 120 Vac


SR3 with Display 16 Digital, 6 Analog 10 Relay 24 Vdc


SR3 with Display 16 Digital 10 Relay 120 Vac


SR3 Expansion 6 Digital 4 Relay


SR3 Expansion 4 Digital 2 Relay

Catalog Number Description


Memory Cartridge


USB Programming Cable

Modicon M221 PLC



Providing “Best in Class” performance for compact machine automation, the Modicon M221 PLC features intuitive machine programming using SoMachine Basic software, ready-to-use applications and standard function blocks. Its flexible and scalable machine control allows you to easily upgrade to higher performance platforms when necessary. With Ethernet, USB and serial ports, the Modicon M221 PLC provides optimum connectivity for simplified machine integration and maintenance.

Catalog Number




Supply Volts


Compact PLC 16 I/O Relay

9 Digital, 2 Analog

7 Relay

120 AC


Compact PLC 24 I/O Relay

14 Digital, 2 Analog

10 Relay

120 AC


Compact PLC 40 I/O Relay

24 Digital, 2 Analog

16 Relay

120 AC


Ethernet Compact PLC 16 I/O Relay

9 Digital, 2 Analog

7 Relay

120 AC


Ethernet Compact PLC 16 I/O PNP Transistor

9 Digital, 2 Analog


24 DC


Ethernet Compact PLC 24 I/O Relay

14 Digital, 2 Analog

10 Relay

120 AC


Ethernet Compact PLC 24 I/O PNP Transistor

14 Digital, 2 Analog

10 PNP

24 DC


Ethernet Compact PLC 40 I/O Relay

24 Digital, 2 Analog

16 Relay

120 AC


Ethernet Compact PLC 40 I/O PNP Transistor

24 Digital, 2 Analog

16 PNP

24 DC


Ethernet Modular PLC 16 I/O Relay

8 Digital, 2 Analog

8 Relay

24 DC


Ethernet Modular PLC 16 I/O PNP Transistor

8 Digital, 2 Analog


24 DC

Modicon M241 PLC

Designed for high-performance compact machines incorporating speed and position control functions.


Designed for high-performance compact machines, incorporating speed and position control functions–the Modicon M241 PLC features a dual core processor–that provides tremendous processing power and memory size for complex applications. Machine programming is highly intuitive using SoMachine software, function blocks and ready-to-use applications. And, the M241 PLC’s simplified motor control integration and wiring allow for quick start-up and commissioning.

Catalog Number Communication Inputs Outputs Supply Volts


Modbus TCP, EthernetIP, Modbus Serial, Ascii [1]

14 Digital

4 PNP, 6 Relay

24 dc


14 Digital

10 PNP


24 Digital

4 PNP, 12 Relay


24 Digital

16 PNP


Modbus TCP, EthernetIP, Modbus Serial, Ascii, CanOpen, CAN J1939 [1]

14 Digital

4 PNP, 6 Relay


14 Digital

10 PNP


14 Digital

10 NPN

Additional versions available, please see Modicon M241 Micro PLC or catalog DIA3ED2140108EN for additional information.

Modicon™ M251 PLC

Modicon M251 PLC — Innovative, high-performance solution for modular machines and distributed architectures with line control.



The Modicon M251 PLC provides innovative, high-performance solutions for modular machines and distributed architectures with line control. Its intuitive SoMachine software, ready-to-use applications and function blocks allow you to optimize your programming time. And, its flexible and scalable machine control allows you to change the PLC hardware type to fit the application, using the same programming across the range. The M251 PLC allows you to stay connected everywhere via Ethernet, wireless access, web servers and remote visualization… simplifying machine integration and maintenance. Its integrated Ethernet switch - on a separate channel from the machine control network - allows data exchange with other machines and system networks, while keeping the machine control on a dedicated high-performance local network.

Catalog Number Description Com 1 Com 2 Supply Volts

The M251 can be further enhanced using the TM3 (I/O & Safety). TM4 (communication), and TMC (I/O) expansion modules.


Dual Channel Ethernet PLC

Dual Port Ethernet

Ethernet as Master

24 dc


Ethernet and CANopen PLC

Dual Port Ethernet

CANopen as Master

24 dc

Additional versions available, please see our website and catalog DIA3ED2140108EN for additional information.
Catalog Number Description

TM3 I/O Expansion Modules for M221, M241, M251 PLCs. Up to 7 modules per PLC. Add TM3XTRA1 + TM3XREC1 to add 8-14 TM3 modules. Additional TM3 modules are available.


I/O Module 4 Analog Inputs


I/O Module 8 Analog Inputs


I/O Module 4 Analog Inputs and 2 Analog Outputs


I/O Module 2 Analog Outputs


I/O Module 4 Analog Outputs


I/O Module 16 Inputs


I/O Module 8 Inputs


I/O Module 8 Inputs 120 Vac


I/O Module 8 IO Relays


I/O Module 16 Outputs Relays


I/O Module Outputs Transistor PNP


I/O Module 8 Outputs Relays


I/O Module Outputs Transistor PNP


I/O Module 4 Inputs Temperature


I/O Module 8 Inputs Temperature


I/O Expansion Transmitter for 8–14 TM3 Modules


I/O Expansion Receiver for 8–14 TM3 Modules

Modicon™ M258 PLC

The Modicon M258 logic controller is a compact, high-performance and fully expandable PLC. It forms a part of Flexible Machine Control approach, a key component of Machine Struxure, which brings you maximum flexibility and ensures the most optimized control solution. This PLC is designed for machine manufacturers (OEMs) focusing on applications such as packaging, conveying and storage, textiles and woodworking, etc. It offers high-performance solutions for speed control, counting, axis control, and communication functions. The Modicon M258 logic controller’s dual-core processor provides extremely high performance. Core 1 is dedicated exclusively to managing program tasks and offers the maximum resources for real-time execution of the application code. Core 2 is dedicated to executing communication tasks, which have no impact on the application performance. More information is available at Modicon M258 PLC and catalog DIA6ED2100402EN.

SoMachine™ Software Suite

SoMachine is the OEM solution software for developing, configuring and commissioning the entire machine in a single software environment, including logic, motion control, HMI and related network automation functions. SoMachine allows you to program and commission all the elements in Schneider Electric’s Flexible and Scalable Control platform, the comprehensive solution-oriented offer for OEMs, which helps you achieve the most optimized control solution for each machine’s requirements. Flexible and Scalable Control platforms include:

Match your controller to the available software package:

MachineStruxure Product Range

Schneider Electric Software

Software Distribution

Zelio Logic: Smart Relays 10 to 40 I/O

Zelio Soft: Zelio Logic configuration software

Free to Download

Modicon M171 / M172: HVAC Logic Controller

SoMachine HVAC

Free to Download

Modicon M221 Nano PLC

SoMachine Basic

Free to Download

Modicon Motion: M221, M241, M251, M258, LMC058, and LMC078

NOTE: Vijeo Designer and SoMachine Basic are included

Available to order

Magelis HMI: SCU and XBTGC

PacDrive Motion Controller

SoMachine Motion

Available to order

SoMachine is a professional, efficient, and open software solution for integrating Vijeo Designer. It also integrates the configuring and commissioning tool for motion control devices. It features all six IEC 61131-3 languages, integrated field bus configurators, expert diagnostics and debugging, as well as outstanding capabilities for maintenance and visualization.

More information is available at SoMachine and catalog DIA3ED2140110EN.

Modicon™ TSX Micro™ PLC

Compact and cost-efficient, this mid-range PLC boasts the power and flexibility OEMs find most desirable. Optional integrated safety relays, half-size I/O and web-enabled modules provide seamless connection to supervisory maintenance systems plus minimize real estate. PCMCIA memory cards preserve your investment when expanding. Communication options include Ethernet and ASi for global access using Open standards. More details are available at More information is available at Modicon TSX Micro PLC and catalog MKTED204012EN.

PL7™ Application Software

PL7 application software complies with the IEC 61131 standard for programming software. PL7 can be programmed in four IEC languages including two text-based editors (Structured Text and Instruction List), and two graphic-based editors (Sequential Function Chart and Ladder Diagram). PL7 software promotes productivity by using structured programming, which increases reusability, while reducing maintenance costs, and can be used to program both the Micro PLC and the Premium PAC. More information is available at PL7 Programming Software and catalog MKTED208054EN-US.

Modicon™ Unity Momentum PLC

The small footprint and open architecture of the Momentum PLC product line make it extremely versatile for a variety of automation applications. The Unity Momentum PLC is ideal for PC-based control, distributed control, distributed I/O, and traditional, standalone PLC control. The Momentum PLC product line includes I/O bases and communication adapters that are interchangeable and snap together to deliver optimal flexibility throughout the control system life cycle. Using Ethernet as its communications backbone, the Modicon Unity Momentum CPU delivers all the performance benefits of real-time control. The open architecture of the Unity Momentum CPU makes it a universal controller for distributed I/O, compatible with many of the major fieldbus and control network environments. An integral Ethernet port in the Unity Momentum CPU allows users to perform a wide range of functions over Ethernet, including data acquisition, peer-to-peer communications, and I/O scanning. Embedded web pages enable the use of a standard web browser to read status and diagnostic information from the processor. The Unity Momentum CPU not only seamlessly connects I/O and other control devices via open standards; it delivers the performance of a full function, realtime controller for stand-alone and distributed system configurations in one moneysaving unit. Additional information can be found at

Modicon M340™ PAC

Our latest midrange PAC is the most integrated ever! Highly requested by industrial OEMs and end users, the all-power-inside concept boasts high-performance processing and small size to create a system that provides flexibility beyond any before. With up to three built-in CPU communication ports, large memory options, sixty-four channel high-density modules, and embedded web servers, the Modicon M340 is a powerful solution for industrial OEMs and end users demanding more productivity in their PACs. The Modicon M340 PAC supports advanced communications such as enhanced Ethernet/IP which support Ethernet/IP, Modbus TCP/IP, and daisy chain loop communications on the same four-port, rack mounted switch module. It will also support DNP3.0 in serial or Ethernet in a rack-mounted RTU module. The Modicon M340 PAC is programmed with Unity Pro software, which allows users to dramatically reduce setup time and effort with features like drag ‘n drop CANopen bus setup and standard IEC 61131–3 language selection. Designers gain fast, easy and efficient startups. More details are found on our website or in the latest Modicon M340 catalogs and brochures. More details are available at Modicon M340 PAC and catalog DIA6ED2061001EN-US.

Modicon M580™ ePAC

The Modicon M580 ePAC (Ethernet Programmable Automation Controllers) features openness, flexibility, robustness and sustainability. The M580 ePAC is designed with an Ethernet backbone to optimize connectivity and communications. The microprocessor has three native Ethernet ports on the chip. Schneider Electric collaborated with the supplier to design the microprocessor, and in 2013 the supplier agreed to provide the microprocessor for 20 years, helping to protect customers' long-term investments. The powerful processors offer high levels of computation for complex networked communication, display and control applications. The M580 ePAC is designed for cybersecurity. It has an Achilles Level 2 certification. Achilles Level 2 certification by Wurldtech is considered to be the best cybersecurity certification available for PACs. The M580 has other advanced embedded cyber security features that are defined by IEC 62443. This includes, but is not limited to the ability to disable unused services, control of remote access to the PAC and integrity checks of Unity Pro executable files. The M580 ePAC supports X80 common I/O modules which can be easily integrated into its architecture. More details are available at www.schneider-electric.usModicon M580 PAC Controller.

Modicon Premium™ PAC

Ideally suited for discrete manufacturing, complex OEM applications as well as municipality and infrastructure applications, this cost-effective PAC line features integrated functions such as weighing, interpolated motion control, and process loops. Using the built-in Ethernet port, user-customized web page capabilities, and a range of popular open-standard fieldbus connections, the Modicon Premium enables seamless communication with enterprise systems providing low-cost remote maintenance diagnostics. More details are available at Modicon Premium PAC.

Modicon Quantum™ PAC

The Modicon Quantum PAC is our high-end, full function PLC designed for high I/O count industrial applications that require high performance such as Pharmaceutical, Petrochemical, Food and Beverage, Automotive, and others. Quantum also offers true bumpless hot standby. Quantum processors can be programmed with Unity Pro software, and can also support legacy 984 ladder logic programs in the LL984 Unity Pro editor by simply importing the legacy application program. Concept™ application software and ProWORX™ 32 application software are also supported on the Quantum platform. The Unity Quantum's onboard memory can exceed 3 Mbytes, and can have more than 7 Mbytes of extended memory on a PCMCIA card for data and application storage combined. It can also provide over 8 Mbytes of data storage alone. The Quantum PLC also offers Safety PAC versions certified for use in up to SIL3 applications. This includes both standard and hot standby capability as well as redundant I/O. It programs with Unity Pro XLS. The SIL3 offer stresses both high reliability as well as high availability. More details are available at Modicon Quantum PAC and catalog DIA6ED2110705EN-US.

Unity™ Pro Application Software

Unity Pro software for application development is compliant with IEC 61131-3. It includes the five IEC editors and an LL984 editor to support imported 984 ladder logic from legacy hardware. Unity Pro is compatible with all Industrial midrange and high-end controllers including Modicon Momentum, M340, Premium, M580 and Quantum PACs. Unity Pro provides a collaborative automation environment that enables individuals and teams to work together more effectively, reducing the cost of developing and managing automation solutions. Unity Pro XLS software is used to program the SIL3 Quantum as well as all other Unity-based platforms. Since one software package can program all the platforms, it greatly simplifies development and support issues. It integrates commercial IT technologies like Ethernet, VBA, XML and hyperlinks within the traditional control framework to enable customers to reduce the cost of automating both discrete and batch control applications. More details are available at Unity Pro and catalog MKTED2140504EN.


  1. NOTE: Profibus DB is available via TM4 expansion module.

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